4. Consider the following 6 months of returns for 2 stocks and a portfolio of those 2 stocks. Stock A Stock B Portfolio Jan 2% 0% 1% Feb 5% -3% 1% Mar -6% 8% 1% Apr 3% -1% 1% May -2% 4% 1% Jun 4% -2% 1% a. What is the expected return and standard deviation of returns for each of the two stocks? b. What is the expected return and standard deviation of return for the portfolio? C. Is the portfolio more or less risky than the two stocks? Why